diff --git a/Wox.Infrastructure/Storage/BinaryStorage.cs b/Wox.Infrastructure/Storage/BinaryStorage.cs
index ccdd82903c..39f1a43b7a 100644
--- a/Wox.Infrastructure/Storage/BinaryStorage.cs
+++ b/Wox.Infrastructure/Storage/BinaryStorage.cs
@@ -4,6 +4,7 @@ using System.IO;
 using System.Linq;
 using System.Runtime.Serialization.Formatters.Binary;
 using System.Text;
+using Wox.Infrastructure.Logger;
 
 namespace Wox.Infrastructure.Storage
 {
@@ -24,7 +25,7 @@ namespace Wox.Infrastructure.Storage
         {
             try
             {
-                FileStream fileStream = new FileStream(ConfigPath, FileMode.Open, FileAccess.Read, FileShare.Read);
+                FileStream fileStream = new FileStream(ConfigPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
                 BinaryFormatter binaryFormatter = new BinaryFormatter();
                 serializedObject = binaryFormatter.Deserialize(fileStream) as T;
                 fileStream.Close();
@@ -37,10 +38,22 @@ namespace Wox.Infrastructure.Storage
 
         protected override void SaveInternal()
         {
-            FileStream fileStream = new FileStream(ConfigPath, FileMode.Create);
-            BinaryFormatter binaryFormatter = new BinaryFormatter();
-            binaryFormatter.Serialize(fileStream, serializedObject);
-            fileStream.Close();
+            try
+            {
+                FileStream fileStream = new FileStream(ConfigPath, FileMode.Create);
+                BinaryFormatter binaryFormatter = new BinaryFormatter();
+                binaryFormatter.Serialize(fileStream, serializedObject);
+                fileStream.Close();
+            }
+            catch (Exception e)
+            {
+                Log.Error(e.Message);
+                #if (DEBUG)
+                {  
+                    throw e;
+                }
+                #endif
+            }
         }
     }
 }
diff --git a/Wox.Plugin.SystemPlugins/Program/Programs.cs b/Wox.Plugin.SystemPlugins/Program/Programs.cs
index f4b1165d7f..f49bfcd38e 100644
--- a/Wox.Plugin.SystemPlugins/Program/Programs.cs
+++ b/Wox.Plugin.SystemPlugins/Program/Programs.cs
@@ -15,6 +15,7 @@ namespace Wox.Plugin.SystemPlugins.Program
     public class Programs : BaseSystemPlugin, ISettingProvider
     {
         private static object lockObject = new object();
+        private static List<Program> programs = new List<Program>();
         private static List<IProgramSource> sources = new List<IProgramSource>();
         private static Dictionary<string, Type> SourceTypes = new Dictionary<string, Type>() { 
             {"FileSystemProgramSource", typeof(FileSystemProgramSource)},
@@ -29,7 +30,7 @@ namespace Wox.Plugin.SystemPlugins.Program
             if (query.RawQuery.Trim().Length <= 1) return new List<Result>();
 
             var fuzzyMather = FuzzyMatcher.Create(query.RawQuery);
-            List<Program> returnList = ProgramCacheStorage.Instance.Programs.Where(o => MatchProgram(o, fuzzyMather)).ToList();
+            List<Program> returnList = programs.Where(o => MatchProgram(o, fuzzyMather)).ToList();
             returnList.ForEach(ScoreFilter);
             returnList = returnList.OrderByDescending(o => o.Score).ToList();
 
@@ -75,6 +76,7 @@ namespace Wox.Plugin.SystemPlugins.Program
         protected override void InitInternal(PluginInitContext context)
         {
             this.context = context;
+            programs = ProgramCacheStorage.Instance.Programs;
             using (new Timeit("Program Index"))
             {
                 IndexPrograms();
@@ -121,10 +123,10 @@ namespace Wox.Plugin.SystemPlugins.Program
                 }
 
                 // filter duplicate program
-                tempPrograms = tempPrograms.GroupBy(x => new { x.ExecutePath, x.ExecuteName })
+                programs = tempPrograms.GroupBy(x => new { x.ExecutePath, x.ExecuteName })
                     .Select(g => g.First()).ToList();
 
-                ProgramCacheStorage.Instance.Programs = tempPrograms;
+                ProgramCacheStorage.Instance.Programs = programs;
                 ProgramCacheStorage.Instance.Save();
             }
         }